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c. s. LABOFISH.

TYPE WRITING MACHINE.

APPLICATION HLED JUNE 10. i918.

1,317,? 96. Patented Oct. 7,1919.

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CHARLES S. LABOFISH, OF NEW YORK, N. ,Y., ASSIG-NOR TO REMINGTONTYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Application filed June 10, 1918.

To all whom it may concern:

Be it known that I, CHARLES S. LABoFIsH, citizen of the United States,and resident of the borough of Manhattan, city of New York, in thecounty of New York and State of New York, have invented certain new anduseful Improvements in Type-WritingMachines, of which the following is aspecification.

My invention relates to typewriting machines and more particularly tomargin stop mechanism.

The main object of my invention, generally stated, is to improve suchmechanism and provide. simple and efiicient means for affording anautomatic control thereof so that writing may be produced atpredetermined intervals within the margin.

In preparing various documents, such, for example, as specifications forapplications of Letters Patent, it is desirable to number the lines. Itis customary to number every fifth line within the re uired margin.

One of the more speci 0 objects of my invention is to provide means bywhich this may be readily accomplished. I To this end I have providedmeans by which the margin stop mechanism is automatically con trolledfrom the line spacing mechanism so that every, say, fifth actuation ofthe latter is operative to render the margin stops ineffective to arrestthe carriage at its normal point of arrest, and permit it to move beyondsaid point to write the requisite number within the margin.

A further object of the invention is to provide means in the nature ofan attachment that may readily be applied to existing machines on themarket to effect the results stated without modifying, or materiallymodifying, the structuralfeatures of such machines as they now exist.

To the above and other ends, which will hereinafter appear, my inventionconsists in the features of construction, arrangements of parts andcombinations of devices set forth in the following description andparticularly pointed out in the accompanying claims.

In the accompanying drawings, whereln like reference characters indicatecorre-.

riage of an Underwood machine equipped with the devices of my invention.

Specification of Letters Patent.

Patented Oct. "7, 1919.

Serial No. 239,226.

Fig. 3 is a fragmentary top plan view partly in section of the partsrepresented in Fig. 2. I p

In the present instance I have shown invention embodied in an Underwoodmachine in which the invention may be readily V incorporated withoutchanging, or materially changing, the structural features of. that.machine. It should. be understood, however, that the invention may beembodied in various otherstyles of machine with equal facility. I I

Only so-much of an Underwood machine; is shown as may be necessary toillustrate my invention in its embodiment therein. Thus thecarriage,'designated as a whole bythe refercncenumeral 1, carries acylindri-i cal platen 2 adapted to receive the usual case shlftingmovement relatively thereto, the carriage being nonshiftable but mountedin the usual manner to travel from side to side of the machine over thetop plate.

A line spacing wheel 3 is secured to the platen shaft 4. A line spacepawl 5 is formed as a part of a carrier 6 pivoted at- 7 to aspring-returned slide 8. This slide. is mounted in a housing 9 on theleft-hand side of the platen frame to slide fore-and-i aft of themachine. A leaf spring 10 is secured at one end, as at 11, to the slideand bears down at its free end against the carrier-6 of the line spacingpawl. This re-: sults in forcing the pawl to engage-the teeth of thewheel 3 when the adjustable controlling member 12 permits suchengagement to erence numeral 13, is pivotally mounted on the carriage toturn on a vertical axis around a shouldered screw pivot 14. This handlever is provided with a finger piece 15 by which it is actuated, andwith a crank arm 16 which co-acts with the forward end of the springreturned slide 8. A movement of the finger piece 15 from left to rightis efi'ective to actuate' the slide 8 and produce a line spacingmovement of the platen. The

extent of this line spacing movement may be controlled in the usualmanner by the setting or adjustment of the member 12 hereiiiheitore'referred to. Continued pres sure exerted on the finger piece results inthe carriage-being moved'to the rig-ht until it is ar ested by-"amarginstop 17 on the carriage co-acting with the left-hand face of theusual adjustable margin stop 18 carried by the frame of the machine. Themargin'stop 17 is forn'iedb'y the forwardly bent end of a lever 19 whichextends long tudinally of and parallel with the'front cross bar 20 ofthe carriage, and beneath the forwardly extending flange 21 of saidcross bar 'Theilever 19 is pivoted at 22 to the cross bar. and extendsupwardly atits righthand end to form a finger piece or key 23.

A depression of the key is efiectiveto elevate the left-hand end of thelever against the force of a leaf spring 2-1, thus carrying the levertojthe dottedline position where the stop 17 is moved out of cooperativerelation with the stop 18.. The carriage may then be moved to the rightbeyond its normal point of arrest where the'stops :17 and 18 oo act, andis finally arrested by the. stop fire-acting with the final stop 25. Theoperator may thus at any time write within the margin by depressing themargin Tea 7 20 of the carriage. 501

lease'key 23. After the stop 17 has passed to the right of the stop 18,and pressure on the key 23. has been released, the stop 17 in themovement ofithe carriage to the left will contact with the right-handbevel vface 26 of the stop 18 and be lifted and thus 'autoinaticallypass the'stop 18 without ob? structing the movement ofwthecarriage.

The construction thus far described C011. st tutes part of the ordinaryUnderwood machine. r

In order to relieve the operator from the necessity of constantlybearing in mind how many lines have been written, and when it isnecessary to write 1-16 number of a hne within the margin at givenintervals, 1 have provided means for automatically releasing themar instops at such given intervals, thus bringingthe carriage at once to thepoint where the number of the line may be writtenwithin the margin.Andthc very actof a carriage automatically 'moving be yond its normalpointof arrest is effective to warn the operator to write the requisitenumber within the margin before proceeding to write the line.

.The autoinatically operating means in normally extends into the path ofmovementv of the line spacing lever 13, as shown in Fig. 1. There arefive teeth a, I), 0, (Z and e on the star wheel in the present instance,so that live 7..

intermittent movements transmitted to the Wheel by the line spacinglever is efi'ective to make'a complete turn of the wheel.-

"Secured to the rear face ofth'estar wheel 27 is e a rotative actuatingdevice, cam or wiper, designated as a whole 'by the reference numeral30.This device in the present instance is formed with five faces, 7,7 0, 2'and Each of these faces oo-acts with the. flat upper edge 31 of acombined actuating and detent lever 32, tending to restore the Wheel 27to andhold' it in any one of the diiferent positions to whichthe wheelmay'ordinarily be moved, as will. hereinafter appear; I It Will beobserved that the radial distance of all the surfaces or faces, f, 5],7L

and i,,from the center of the wheel is the same, whereas theface 7' isformed on the end of an extension of the wiper 30, and its radialdistance from the center of the wheel is greater than that of the otherfaces;

The lever 32 is pivoted on a shouldered pivot screw 33 securedtothefront cross bar 20 of the carriage. The right-hand end of thislever extends downwardly and then'upwardly to form a finger 3 1 whichlies beneat-h theinner end of the release lever 19 in a position toco-act therewithto shift-tho latter tromthe. full to the dotted lineposition shown in Fig; 1. It should, be understood that the spring 24;is effective not only. to normally maintain the release lever 19 in thefull line position in Fig.1, but also to exert its force through saidlever against the lever 32 to force the left-hand end of the latterupwardly. The effect of this is to cause the flat face" 31 onthe lever32 to bear againstone of the flat faces fig, h, t or of thewiper andtend to maintain the wheel in a position where one of the teeth thereonwill be maintainedin the oath of the line s acin lever. V JD 3 as shownin Fig, 1.

While the spring 24: and the levers 19 and 32 may be sutficient inthemselves to act as a detent mechanism for the purpose describedIpre-fer'to add a spring, detent-35 formed substantially as shown andsecured. atone end, as at 36, tothe flange21. Thefreeend portion ofthis-spring is: adapted t0 bear" against the teeth of the star wheel 27and tends to assure the movement of the wheel to, and to hold it;against accidental dis; placement from, any one of theseveralpositionsit is to assume: 7 V c g i Let it be assumed that the parts arepositioned as representedin full lines in Fig; 1. and that thefirst linehas not been written. 'he operator will grasp the finger piece 15'moving it to the right therely' effecting a line spacing operation andreturning the car- 'ri'age to the right to begin the first line. Theefi'ect ofthis' is to turn the star wheel 27 one step, thus moving thedetent face '5 out of cooperation with the lever 32 and bringing thedetent face '71, into cooperation therewith; the spring-pressed lever 32and detent spring 35 aiding in a completion of the-movement of the starwheel. This ad vances the tooth b one step to the former position of thetooth 0, and the tooth a will be brought to the former position of thetooth b, shown in Fig. 1. As the line spacing lever returns to itsnormal position it will co-act with the tooth a to effect a slightbackward turning movement of the wheel sufficient to enable the linespacing lever to return to normal position without obstruction from thewheel. This slight backward clearing movement of the wheel is effectedagainst the pressure of the spring detents, as will be understood froman inspection of Fig. 2. As soon asthe line spacing lever has, in itsreturn movement, cleared the engaged tooth a of the wheel it will beslightly advanced again. by the spring detents to elevate the depressedtooth a into the path of the lever, so that on the next actuation of thelatter the wheel may be advanced another step.

It will be understood that while this first step in the advance of thewheel effects a very slight movement of the'levers 32 and 19 on theirpivots this movement is insufiicient to elevate the margin stop 17 to apoint where it will clear the stop 18.

The intermittent movements of the wheel 27 and the member 30 willcontinue until the fifth line spacing operation has taken place when thewiper is brought to the dot-- ted line position shown in Fig.1, with theface co-acting with the lever 32. This results in moving the levers 32and 19 to the dotted line position in Fig. 1, and in elevating the stop17 to clear the stop 18 and enable the carriage to move beyond thenormal point of arrest and to continue such movement until the stop 17co-acts with the final stop The operator will then write the numeral 5within the margin and continue as before until the tenth line spacingoperation has taken place when the carriage has again automaticallypositioned to write the numeral 10 within the margin, and so on.

I have provided simple and efficient means by which the operator may,when desired, render and'maintain ineffective the automaticallyoperating means for controlling the margin stop, mechanism. Thus, acontrolling device in the nature of a screw 37, formed with a mutilatedhead, is threaded into a tapped opening in the front cross bar of thecarriage. The mutilated head provides a flat contact face 38 which isadapted to co-act with the rear side of a tooth of the star wheel whenthe screw is turned from the position shown in Fig. 1 to thatillustrated in Fig. 2. The efiect of this movement of the screw is toproduce a slight backward movement of the wheel from the position shownin Fig. 1 to that illustrated in Fig. 2. This movement of the Wheel issufficient, as will be seen from an inspection of Fig. 2, to maintainthe teeth of the star wheel out of the path of the line spacing lever.Therefore, a movement of the lever at this time has no effect on thestarwheel or the parts controlled thereby, and the automaticallyoperated means are rendered and maintained ineffective or inoperative.\Vhen the screw is returned to the position shown in Fig. l, the detentdevices Will return the wheel to its normal position, shown in saidfigure. At this time the teeth of the wheel may move freely past theflat face 38 of the mutilated head.

In the Underwood machine a full stroke of the line spacing lever isgiven irrespective of the extent of line spacing movement transmitted tothe platenthereby. It Will be understood therefore that the automaticcontrol of the margin stop mechanism is always the same, whether theregulating device for a line spacing mechanism be set for half spacing,full spacing or double spacing, and that this change in the character ofline spacing does not affect the automatically opcrating means in anyway.

' From the foregoing description it will be seen that I have providedsimple and eflicient means of the character specified; that such meansare in the nature of attachments that may be readily incorporated inexisting machines without changing, or materially changin the structuralfeatures of such machines as they now exist, and that by the automaticcontrol of the margin stop mechanism in the manner described I relievethe operator of the constant distraction due to the care which mustordinarily be exercised in numbering the lines, and in remembering tokeep track of the given intervals when the lines should be numbered.

I have shown but one form of mechanism embodying my invention, but amaware that the invention may be clothed in various forms and may bevariously modified to afford an application thereof to other styles ofmachines than that shown, and that such changes may be made withoutdeparting from the spirit and scope of my inventlon.

l/Vhat I claim as new and desire to secure by Letters Patent, is: i

1. In a typewriting machine, the comb-ination of a 'nonshiftablecarriage, a platen adapted to receive a case shifting movementrelatively thereto, means for arresting the carriage in a plurality ofits return movements at the normal given predetermined point of arrest,and automatically operating means carried wholly by said nonshiftablecarriage for enabling the carriage to move beyond such predeterminedpoint to write within the margin once in every given plurality of returnmovements.

2. In a typewriting machine, the combinationof a carriage, margin stopmechanism including a hand-actuated margin release key at the front ofthe machine and which is operable at will, and automatically operatingmeans for actuating said release key.

3. In a typewriting machine, the combination of a no-nshiftablecarriage; line spacing mechanism; coacting margin stops; andautomatically actuated means for rendering said margin stopsinefi'ective to arrestthe carriage, saidcmeans including anautomatically and intermittently actuated wiper carried directly by saidcarriage.

' 4:. In a typewriting machine, the combination of a carriage, marginstop mechanism including a hand-actuated margin release key operable atwill, automatically operating means for actuating said release key, andmeans operable at will for maintaining ineffective said automaticallyoperating means without interfering with the eflectiveness of saidrelease key to be operated at will.

5. In a typewriting machine, the combination of a nonshiftable carriage;line spacing mechanism; coacting margin stops; and automatically 1actuated means for rendering said-margin stops ineffective to arrest thecarriage, said means being carried directly by thecarriage and includingan automatically and intermittently actuated wiper, and means controlledby said wiper for moving one of said margin stops out of cooperativerelation'with the other margin stop.

6. In a typewriting machine, the combination of a carriage; line spacingmechanism; coacting margin stops; and automatically actuated means forrendering said margin stops ineffective to arrest the carriage, saidmeans includingan automatically and intermittently actuated rotativewiper that is always advanced in the same direction, a hand actuatedmargin release key at the V frontof the machine and which may beactuat'edby handat will, and means controlled by said wiper foractuating said key.

7. I a typewriting machine, the combination of a nonshiftable carriage;a shiftable platen carried thereby; line spacing mechanism; coactingmargin stops; and automatically actuated. means for rendering saidmargin stops ineii'ectivev to arrest the carriage,

said'meansincluding an intermittently actuated star-wheel carrieddirectly by said nonshiftable carriage, and means controlled by saidstar-wheel and carried directly by the carriage for controllingone ofsaid margin stops. V

t 8. In a typewriting machine, the combination of a'nonshiftablecarriage, a cylindrical platen shiftable thereon, line spacing mechaGopiu of this patent may be obtained for and State of New York this 6thnism therefor, cooperative margin stops one of which is carried by alever on the carriage, and means carried directly byr said carriage andcontrolled by said line'spa'cing mechanism for automatically shiftingsaid lever to displace the margin stop carried thereby out ofcooperative relation with its companion margin stop.

9. In a ty-pewriting machine, the combination of a carriage, twoindependently'fulcrumed' levers arranged in line lengthwise of thecarriageand operatively connected at their ends, one lever carrying, acarriage arresting stop at, its inner end and a finger piece at itsouter end, a wiper which coacts with the other. lever, a star-wheelwhich turns said wiper, a line spacing lever acting directly on theteethof said star-wheel'to turn it, andra carriage arresting stop with awhich said first mentioned stop coacts.

10. In a typewriting machine, the combination of a carriage, a linespacing lever, a star-wheel arranged adjacent to said line spacinglever, means for insuring that a tooth of said wheel shall'be in thepath of said lever so as to be struck thereby, a rotaorder overlappingat their inner ends and extending substantially I the whole length ofthe carriage, one lever carrying a carriage arresting stop at its innerend and a finger piece at itsouter end, a verticallyarranged star-wheelturnable intermittently in a plane parallel to the plane of movement ofsaid levers, a wipermounted to turn on the axis of said star-wheel andin constant engagement with one of said levers, a horizontally sweepingline spacing lever adapted at each inward stroke to contact with an up-7 standing'tooth of said star-wheel, and a care riage arresting stopwith which said first mentioned stop is adapted to coact. 1 7

Signed at the borough of Manhattan, city of New York, in the countyofNew York,

Witnesses:

CHARLES E. SMITH, E. M. WELLS.

five. cents each, by addressing the Commissioner'ot'Patents, Washington,1), C. j a

day of June,"

tive wiper having a pluralityof faces equi-

